The three materials in one sentence each
Before comparing, it helps to know what each one actually is:
PVC is virgin plastic, the market standard. Durable, cheap at scale, and with no use after the event.
Seed paper is biodegradable paper with seeds in the composition. After the event the person sows it and a seedling grows.
Recycled PET canvas is made from post-consumer plastic bottles. Tough like plastic, recycled in origin, and in the case of EcoCrachá it turns into a wallet.
Each solves a different problem. There is no best in the absolute, there is the right one for your event.
Full comparison
| Criterion | PVC | Seed paper | Recycled PET |
|---|---|---|---|
| Material origin | Virgin plastic | Recycled paper with seeds | Post-consumer PET bottle |
| Water resistant | Yes | No | Yes |
| Multi-day event | Yes | Not recommended | Yes |
| Destination after the event | Waste | Becomes a plant if sown | Becomes a wallet |
| Depends on the attendee | No | Yes, they have to plant it | No |
| Cost per unit | R$ 2.00 to R$ 8.00 | Varies with print run | Zero for the organiser |
| Proof of impact | None | Germination certification | Volume of PET put back to use |
| Best scenario | Tight budget | One-day event, engaged audience | Conference, trade show, several days |
Where PVC still makes sense
Worth acknowledging: PVC did not become the standard by accident. It is durable, takes any finish, has a supplier in every city and comes out cheap at high volume. If budget is the dominant constraint and nobody at the event is going to ask about sustainability, it does the job.
The problem is not technical, it is arithmetic. It is hundreds or thousands of pieces of new plastic, produced for a few hours of use, that then take centuries to break down. At an event that talks about environmental targets, that contradiction is visible.
And there is an indirect cost that rarely makes the spreadsheet: PVC generates no proof of impact to show in a report and no new argument for selling a sponsorship package.
Where seed paper wins
Seed paper has two real strengths, and it would be dishonest to leave them out.
The first is the gesture. Handing over something that turns into a plant is memorable in a way no other material reproduces. At an event with an audience engaged in environmental issues, that generates conversation and photos.
The second is the evidence. Papel Semente, the main supplier of the format in Brazil, states that seed germination is certified by RENASEM, part of the Ministry of Agriculture. Third-party certification is a mark of seriousness most sustainable-material suppliers do not offer.
The limitations are real too, and they come from being paper. It does not survive rain, sweat or several days of handling. And the later use depends on the attendee wanting to plant it, having somewhere to plant it, and remembering to do so. Plenty of people keep it with good intentions and never plant it.
In short: seed paper is excellent at a one-day event with an audience that buys the idea. It is risky at a three-day conference and outdoors.
Where recycled PET wins
The advantage of recycled PET is that it resolves two things that are normally in conflict.
Durability and sustainability are usually a trade-off: durable material is new plastic, eco-friendly material is fragile. Recycled PET canvas breaks that trade-off because it is genuinely plastic, with the durability that implies, but recycled in origin.
The second advantage is that the later use does not depend on behaviour. The credential becomes a wallet by folding, and the attendee keeps it because it is useful, not because they were talked into a chore. It is the difference between "recycle this" and "this is already something else".
The honest weak point: it is not biodegradable. If your criterion is that the piece should disappear from the world, recycled PET does not do that. It keeps the material in use for longer, which is a different logic — circular economy rather than decomposition.
The two questions that decide it
All of this comparison reduces to this:
How many days does the event run? If it is more than one, or if there is an outdoor area, paper is off the list. Not out of prejudice, out of physics.
What do you want to happen afterwards? If the answer is "I want it to become a plant", seed paper. If it is "I want it to keep being used with the sponsor's brand on it", recycled PET. If it is "I had not thought about it", it will probably become waste, and you are choosing PVC without admitting it.
The cost nobody calculates
Comparing price per unit hides half the arithmetic.
The credential is the only item every attendee receives and wears for hours or days. If it carries on being used afterwards, it stops being an operating expense and becomes media space with a long duration. That changes what you can charge for a sponsorship package, and it is what makes the zero-cost model possible: the sponsor pays because they get permanence, not one day of exposure.
So the right question is not "how much per unit", it is "how much is this worth to whoever sponsors it". The full reasoning is in eco-friendly event badges, and how the price is built up is in how much an event badge costs.
Frequently asked questions
What is the best material for an event badge?
It depends on the duration and the intended destination. For multi-day or outdoor events, durable plastic materials like PVC or recycled PET canvas. For a one-day event with an audience engaged in environmental issues, seed paper works well. Recycled PET is the only one that combines durability with recycled origin and a later use.
Seed paper or recycled PET, which should I choose?
Seed paper if the value is in the gesture of planting and the event lasts one day. Recycled PET if the event runs several days, if there is a risk of rain or sweat, or if you want the sponsor's brand to keep circulating afterwards. Seed paper depends on the attendee planting it; recycled PET becomes a wallet without asking anything of them.
Is a recycled PET badge biodegradable?
No. It keeps the plastic material in use for far longer, which is circular-economy logic, rather than decomposing. If your criterion is that the piece should disappear, the right material is seed paper or recycled paper.
How long does PVC take to break down?
Estimates go up to 500 years, which is the main argument against using it in a piece worn for a few hours. It remains durable and cheap, but it offers no proof of positive impact for a report and no differentiator for selling sponsorship.
Which material survives a three-day event?
PVC and recycled PET canvas. Paper, including seed paper, tends to crease and degrade with repeated handling, sweat and humidity over several days.
Is there certification for sustainable badge material?
It depends on the material. In the case of seed paper, Papel Semente states germination certification by RENASEM. For recycled materials, what is worth asking the supplier for is evidence of the recycled content's origin. A supplier who cannot say where the material comes from is selling an adjective. The fabric used in EcoCrachá has thermal analysis from the Institute of Chemistry of UNICAMP confirming post-consumer PET origin, and the report can be requested on the product page.
In closing
If your event runs a day and the audience buys the idea of planting, seed paper is a good choice. If it runs longer, if it has an outdoor area, or if you want the sponsor to keep showing up afterwards, the material has to be durable, and then the choice is between new plastic and recycled plastic.
The EcoCrachá uses 100% recycled PET canvas, survives a multi-day event and becomes a wallet at the end. Request a quote with the number of attendees and the duration of your event.